Sup guys. I am going to hack Mobile Suit Gundam - Gihren's Greed - Blood of Zeon (translation patch) and I noticed that it has the movies (STR) , Sounds (XA and CDA) and boot file (CNR) , SLUPS thing , etc but that it has its scripts and etc inside of two .MKD files and I was wondering what is the best way for me to approach these unfamiliar files?
I could try to go about it via Hex editing or PSX Assembly Language modification but I am not very skilled with either.